Giant bowl/ sensory table
Water
2 Lemons
Vegetable peeler
Fill bowl with water
Drop a lemon in the bowl
What happens? Does it float?
Peel one lemon
Drop into bowl
What happens? Does it float?
Why does the lemon with the peal float?
The rind is full of thousands of tiny air bubbles.
Why does the peeled lemon sink?
It sinks because you have removed the air bubbles
that helped it to stay on top of the water. No air bubbles it sinks.